Our challenges don’t stop once the aircraft is in service. Traditional approaches for aircraft inspection, maintenance operations, and repair services are becoming unsupportable. We are experiencing just as much pressure on the back end for new methods and tools to support the design and certification of repairs that can ensure the reliability and extend the life of an aging airframe structures.

Developing a framework to help manage all these risks with improved reliability is a priority for NAVAIR. A key requirement of this framework is that it explicitly support Verification and Validation of engineering methods and models with the fidelity and reliably to capture the parameters of interest whether they be stress, strain, dynamics, or failure modes. This is of critical importance as some aero-structure models may be used and repurposed for years with many changes, enhancements, and extensions. Without some form of governance over our simulation methods, tools, rules, and best practices we may inject even more risk and complexity into our programs.

In this second of our multi-part series on “S.A.F.E.R. Numerical Simulation for Structural Analysis in the Aerospace Industry” we will distill what the need for higher-fidelity engineering analysis means to stress analysis groups and the challenges experienced when using legacy simulation and analysis technologies based on the finite element method (FEM). [...]

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“StressCheck® is the work horse for NAVAIR Structures’ detailed stress and stress concentration calculations. This software also is the basis for our development of a Structural Analysis Management System.”

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